AO Smith Century 1.65 HP Square Flange 115V/230V Motor - HSQ165

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AO Smith Century Centurion Pro 1.65 HP Square Flange 115V/230V Motor HSQ165 is a replacement pool and spa motors that are durable and easy to install. It features TripleSEal protection that is designed into the pump end of the motor to protect the bearings from water, pests, and debris, extending the life of the motor. It has premium sealed 203 bearings on both ends and also has an open and accessible terminal board and wiring compartment. Along with a UL 1081 design, it is also a Voltage change device with definitive shaft access using a 7/16-inch wrench. With an auto protector and 303 stainless steel threaded shaft, this pump has a patented CENTURY SEAL which is its primary line of defense in preventing moisture from washing the grease out of a bearing. It also has an IP-55 rated lip seal located behind the Century seal to ensure any moisture that might make it past is stopped in its tracks. It also has an integrated bearing lock plate for preventing moisture ingress to the backside of the bearing. This particular model, HSQ165 1.65 HP Centurion Pro Motor Square Flange, has an open drip-proof enclosure, with a Counterclockwise Pump End rotation, a 50-degree Celsius ambient temperature, and 60Hz frequency. This is a single-phase motor that has a Total Output HP of 1.65 HP with a 230/115 Voltage, 3,450 RPM speed, 9.4/18.8 Amperes, a 48Y frame, and a Square Flange. With ball drive end bearing and a rolled steel frame material, its dimensions include an overall length of 14.12 inches, frame length of 10.13 inches, shaft extension of 0.906 inches, and a shaft diameter of 0.625 inches.


  • Premium Sealed 203 Bearings Both Ends
  • Open & Accessible Terminal Board & Wiring Compartment For Easy Installation
  • New Triple Seal Protection on Pump-End Bearing
  • Voltage Change Device
  • Definitive Shaft Access (7/16" wrench)
  • UL 1081 Design
  • 50°C Ambient
  • 303 Stainless Steel Shaft
  • Centurion PRO
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